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Lynna [10]
3 years ago
7

Charcoal appears black in color because it Question 17 options: has a black-colored pigment. reflects all wavelengths of light t

hat fall on it. absorbs all wavelengths of light that fall on it. emits black-colored light.
Chemistry
2 answers:
Temka [501]3 years ago
6 0
Black colors absorb all light wavelengths! Its black because all of the colors mixed together = black, and all colors are absorbed.
Nina [5.8K]3 years ago
3 0

Answer: absorbs all wavelengths of light that fall on it.

Explanation: The color of the object depends on the wavelength it absorbs and reflects. The object appears to be of the complimentary color which it absorbs.

White light is made up of 7 different colors. Black objects appear black because they absorb light of all visible wavelengths and reflect back very little.

White objects appear white because they reflect light of all visible wavelengths and absorb very little.

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Answer the following questions for H2CrO4:
Sholpan [36]

If this molecule is one half of a buffer, then the formula of the second half of the buffer is M2CrO4 where M is a univalent metal.

<h3>What is a strong acid?</h3>

A weak acid is one that is able to ionize completely in solution. The acid called chromic acid H2CrO4 is not  able to ionize completely in solution.

We know that a buffer is composed of a weak acid and its salt or a weak base and its salt hence if the acid H2CrO4 is present in a buffer then the other half must be  salt of the acid.

If this molecule is one half of a buffer, then the formula of the second half of the buffer is M2CrO4 where M is a univalent metal.

Learn more about buffer:brainly.com/question/22821585

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7 0
2 years ago
What gas law applies to aerosol cans being stored in a cool place?
svetlana [45]
Don't really know if this is what your asking but P1/T1= P2/T2 should show how the pressure varies with temperature (V is left out because it's constant since the gas is trapped in an aerosol can). As the temperature rises the pressure rises and if it gets too high then the can explodes, which is why it should be stored in a cool place. There's also PV=nRT might be kind of hard to find moles (n) though.


3 0
3 years ago
Why do you think large differences in temperature between the wet bulb and dry bulb thermometers are possible only at higher tem
olganol [36]

Answer:

This is the temperature indicated by a moistened thermometer bulb exposed to the air flow. The evaporation is reduced when the air contains more water vapor. The wet bulb temperature is always lower than the dry bulb temperature but will be identical with 100% relative humidity.

Explanation:

7 0
3 years ago
The solubility of KNO3(s) in water increases as the..
makvit [3.9K]
The answer would be b. Temperature of the solution increases 

Temperature determines the kinetic energy of the water molecule. Higher temperature will cause the molecule to moves faster and the compound (KNO3) could break solute molecule easier make it become more soluble. A higher pressure will increase the solubility of a gas, not solid


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3 years ago
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UHHHHHHHH IDRK TRY THE LINK ABOVE
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